[CR]Campy Seatpin sizes - why so many OEM differences in seatpost

Re: best place to find your seatpost size.

http://www.sheldonbrown.com/seatpost_sizes.html

I personally think, though, that it's always better to have a smaller seatpost. I have noticed that http://www.sjscycles.com sells a number of shims that will allow you to use a smaller seatpost in a larger seat tube, but the reverse is not possible.

- Don Gillies
San Diego, CA